marijuana

The court ruled that the law used to prosecute a marijuana user violated his Second Amendment right to bear arms and is unconstitutionally vague.

Acting Attorney General Todd Blanche said he is immediately moving medical marijuana from Schedule I to Schedule III, which includes drugs like ketamine, Tylenol with codeine and anabolic steroids.

Researchers followed more than 400,000 teens until they were adults. It found that those who used marijuana were more likely to develop serious mental illness, as well as depression and anxiety.

Farmers in the U.S. have grown cannabis since the 1600s — but policymakers are still figuring out how to regulate two famous types of Cannabis sativa. A historian calls the plant "incredibly cryptic."

An appeals court sided with Attorney General Ken Paxton over whether San Marcos's marijuana decriminalization ordinance is legal.

A tour of a grow facility in Maryland reveals the wide variety of scents from different cannabis strains.

A poll showed Texans are in favor of banning THC products, but also of legalizing the use of marijuana recreationally.

In much of the U.S., illegal cannabis outcompetes legal weed sold in licensed shops. For consumers, it can be difficult to find regulated cannabis — but there are tips on how to do that.

Most states allow some sale of cannabis, but testing for pesticides and mold in the weed supply varies from one state to another.

Millions of Americans use cannabis and would like to think the products they buy are safe. But regulation is state by state and full of holes. NPR's new series digs into the risks and solutions.